Despite the school's tampering, Class C made it through the special exam without anyone being expelled. Now, they face the final event of their first year—the graduation ceremony. Horikita struggles to decide what to say to her brother before he leaves, while Ayanokouji puts in motion his plan to deal with Tsukishiro, seeking allies in the form of the other homeroom instructors. Meanwhile, his classmates' suspicions about him grow—including one girl who might be getting a little too fascinated by him.